Releasing just 100 mice carrying a faulty gene designed to stop them reproducing can remove an entire population of 50,000, a new study shows, paving the way for new eradication efforts.
In an ideal world of gender equality and recognition for women’s work, surrogacy could perhaps be part of a paid, legitimate economy.
(Camila Cordeiro on Unsplash)
As the Canadian Fertility and Andrology Society urges the government to consider “compensation” for surrogacy, we need to talk about the implications of this rhetoric for women.
In 1997, scientists announced they’d created a healthy sheep cloned from another ewe’s mammary gland cell. Two decades on, the technique is being refined and applied to new challenges.
In a recent survey, most men didn’t think their age was a big factor in their fertility.
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Rotifers are tiny creatures found in ponds or puddles and can reproduce without sex. The theory says they should not have survived so how have they done it?
Is a woman’s longing for a child evolution at work, or social conditioning? And what about those who don’t want kids? Are they defying nature? Probably not, as almost everyone wants sex.
Many animals form life-long partnerships, but they’re not always about sex.
Brett Sayer/Flickr
Many animals, including humans, form long-term partnerships, but some are same-sex, suggesting they’re not all about raising offspring but some other form of cooperation.
Scientists have tended to think of nonhuman sexual behaviour as being all about reproduction. In fact, there is far more ha ha hee hee than we give animals credit for.
Since science made it possible to research manipulating the cells that are linked to reproduction, the naysayers have carried the day. But how solid are their objections really?
Sometimes the audience can be a font of illuminating questions.
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I sometimes forget that people can feel embarrassed listening to me talk about my research on sperm. But often those same people can also be a source of amazement and inspiration.
Recent research into the health effects of the plastic-making chemicals phthalates has reignited concerns about low sperm counts. But the evidence is far from conclusive.